theoretical ·adjective (IDEAS)
Definition: based on the ideas that relate to a subject, not the practical uses of that subject Level: C2
他的论点纯属理论，缺乏任何实证依据。
His argument is purely ___theoretical and lacks any empirical evidence.
这门课程侧重于量子力学的理论基础。
The course focused on the ___theoretical foundations of quantum mechanics.
在实施该政策之前，我们必须超越理论讨论，考虑实际限制。
Before implementing the policy, we must move beyond ___theoretical discussions and consider practical constraints.